Tomato, Zucchini, Squash, and Caramelized Onion Gratin
Servings 8
Equipment
- Large Baking Dish
- Large skillet
Ingredients
- 6-7 large Roma tomatoes sliced
- 1 large zucchini or 2 small ones, sliced
- 1 large yellow squash or 2 small ones, sliced
- 1 tbsp olive oil
- 1 onion sliced
- 1 clove of garlic sliced very thin
- ¼-½ cup of Parmesan cheese grated
- ½ tsp dried basil
- 2-3 leaves of basil chopped for garnish
Instructions
- Preheat the oven to 375 degrees. Coat a large and deep baking dish (I used a large CorningWare casserole dish) with olive oil cooking spray.
- Slice the zucchini, yellow squash, onion, and tomatoes into thick slices.
- Heat the olive oil in a large skillet over medium heat. Once the large skillet is hot, add the onion slices and sauté for 15-20 minutes or until golden brown and caramelized, then season with sea salt to taste.
- Add the garlic to the onions and sauté, stirring frequently, for 60 seconds. Set aside to cool.
- Layer the dish with first tomatoes, then yellow squash, a bit of Parmesan, then the layer of caramelized onions and garlic, then the zucchini, and finally the last layer of tomatoes. I seasoned each layer (except the onions) with a little sea salt and freshly cracked black pepper.
- Top with the remaining Parmesan cheese, and then sprinkle the dried basil on top and cover with a lid or foil.
- Bake for 20-25 minutes. Remove the lid or foil and broil for 3-4 minutes or until golden brown and crispy on top.
- Let cool for a few minutes. Garnish with fresh basil. Enjoy.